4 years ago

6{−4[−5+7−(1+9)]+7}−9

Mathematics

1 answer:

Zinaida [17]4 years ago

8 0

Answer: 57

Step-by-step explanation:

6{-4[-5+7-(10)]+7}-9

6{-4[-1]+7}-9

6{11}-9

66-9=57

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Answer:

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Step-by-step explanation:

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